There are 2 repositories under openttd topic.
🚂 OpenTTD in a container. Pure, plain, and simple.
A house replacement set for OpenTTD. Formerly known as Improved Town Layouts.
A Discord bot for connecting OpenTTD and Discord
An AI for OpenTTD that doubles as your highway department!
OpenTTD AI. Official topic at TTforums - http://www.tt-forums.net/viewtopic.php?f=65&t=47298
MinchinWeb's MetaLibrary for writing AI's in OpenTTD
Sal's Canalboats is an OpenTTD vehicle set for transporting cargo during the early industrial revolution.
A NewGRF for OpenTTD that contains trains that circulate(d) in Portugal.
NewGRF with modern trains of Deutsche Bahn (German railway company)
Trans AI is in-game 'computer' player to beat you playing OpenTTD. It try to transporting cargoes from/to any towns and industries using Bus, Truck, Tram, Train, Aircraft and Ship. In the future it would try to use all available vehicles. Current strategy is try to use only one type of industry (if possible) as the destination of transporting cargo named "Cargo Concept", As described
openttd-docker, to be used manually or, as intended, with kubernetes. this is a multiarch build.
BonkyGFX is an attempt to create a new base style for OpenTTD, replacing all sprites.